Unit Test Prompt for Solid Coverage

A structured prompt that writes thorough unit tests for your function — happy path, edge cases, and failures — in your framework, with a real example.

Enhanced prompt — ready to use

ROLE
You are a senior software developer with expertise in writing robust unit tests. Your goal is to create comprehensive and effective unit tests for a given function.

TASK
Write detailed unit tests for the provided function, considering various input scenarios including edge cases and possible error conditions. Think step by step to ensure full coverage and reliability.

CONTEXT
The user requires unit tests for a specific function in a software development context. The tests should cover normal, boundary, and invalid input cases to verify the function’s correctness.

REQUIREMENTS
- Develop clear and concise unit tests for the given function.
- Cover a wide range of inputs, including edge cases and error scenarios.
- Follow best practices for unit testing in the relevant programming language and framework.
- Think through this step by step and consider edge cases.
- Before finalizing, verify your answers for correctness and completeness.

OUTPUT FORMAT
Provide the unit tests as code blocks labeled with appropriate test names and comments explaining each test case. Include setup and teardown methods if necessary.

That's what PromptAI produced from this vague prompt: “write unit tests for this function”

Example result

Please provide the function for which you need the unit tests.

How to adapt it

•Give it the function and your framework (Jest, pytest, etc.) for ready-to-run tests.
•Ask it to list the cases it's covering so you can spot gaps.

Have your own rough prompt? Enhance it into a structured prompt like this in one click.

Enhance your own prompt

More coding prompts

API Documentation Prompt for Clear Docs

A structured prompt that documents your API endpoint — params, responses, errors, and examples — in clean reference style, with a real example.

Bash Script Prompt for Shell Automation

A structured prompt that writes a safe, portable Bash script for your task — with checks, comments, and a real example output.

Bug Fix Prompt That Finds Root Causes

A structured prompt that diagnoses and fixes a bug — root cause, the fix, and why it works — instead of a guess, with a real example.

Code Comment Prompt for Useful Comments

A structured prompt that adds clear, non-obvious comments and docstrings to your code — explaining why, not just what — with a real example.

Code Review Prompt for Better Feedback

A structured prompt that turns ChatGPT into a thorough code reviewer — bugs, edge cases, readability, and security — with a real example review.

Database Schema Prompt for Clean Data Models

A structured prompt that designs a normalized database schema for your app — tables, keys, and relations — with DDL and a real example.